Somerset runner with attractive top (7)
I believe the answer is:
execute
'top' is the definition.
Although both the answer and definition are verbs in their base form, I can't understand how they can define each other.
'somerset runner with attractive' is the wordplay.
'somerset runner' becomes 'exe' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'with' is a charade indicator (letters next to each other).
'attractive' becomes 'cute' (similar in meaning).
'exe'+'cute'='EXECUTE'
Can you help me to learn more?
(Other definitions for execute that I've seen before include "Realise" , "Guillotine" , "Carry into effect" , "Maybe send to chair" , "ice" .)